The article presents a concentric circle compound reconfigurable (frequency, polarization,
and pattern) microstrip antenna for lower-S band (2.0 GHz-3.0 GHz) applications. Varying …

A wideband frequency tunable concentric circular microstrip patch antenna with
simultaneous polarization reconfiguration is demonstrated by using four varactor diodes …

In this article, a circular microstrip tunable wideband frequency and polarisation
reconfigurable antenna are investigated. The wideband tunability is achieved by placing the …

This article basically deals with the implementation of a negligible resistance varactor with a
wide capacitance value into a modified version of a cedar shape antenna [1]. The …

A frequency reconfigurable microstrip transformed rectangular patch antenna consisting of
two slots able to radiate in S-band and C-band is proposed. Spectrum occupancy is first …

This paper explains why antennas can achieve limited frequency tunability by mounting
varactor diodes across slots. The reason is that majority of varactors have a resistance in …

In the present paper, it was completed the design and numerical simulation of a rectangular
patch antenna with an inset microstrip feeding line using the Finite Element Method (FEM) …

In this paper, a novel Ultrawideband (UWB) planer antenna with tunable band-notch
characteristics is proposed. By changing the bias voltage applied to the varactors, the band …

A dual mode (TM 11 and TM 21) circular microstrip patch antenna combined with an annular
ring is investigated for frequency tunability and polarization reconfiguration. Using varactor …

In this paper, a 2× 2 planar array antenna employing circular microstrip patches capable of
simultaneous frequency tunability and polarization reconfiguration is investigated. Using …